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/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
* Main authors:
* Vincent Barichard <Vincent.Barichard@univ-angers.fr>
*
* Contributing authors:
* Christian Schulte <schulte@gecode.org>
*
* Copyright:
* Christian Schulte, 2012
* Vincent Barichard, 2012
*
* This file is part of Gecode, the generic constraint
* development environment:
* http://www.gecode.org
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
#include <gecode/float.hh>
#ifdef GECODE_HAS_MPFR
#include <gmp.h>
#include <mpfr.h>
namespace Gecode { namespace Float {
/// Type signature of mpfr function
typedef int mpfr_func(mpfr_t, const __mpfr_struct*, mp_rnd_t);
/// Routine to call mpfr function with proper rounding
forceinline double
invoke_mpfr(FloatNum x, mpfr_func f, mp_rnd_t r) {
mpfr_t xx;
mpfr_init_set_d(xx, x, GMP_RNDN);
f(xx, xx, r);
FloatNum res = mpfr_get_d(xx, r);
mpfr_clear(xx);
return res;
}
/// Define mpfr functions with proper rounding
#define GECODE_GENR_FUNC(name) \
FloatNum Rounding::name##_down(FloatNum x) { \
return invoke_mpfr(x, mpfr_##name, GMP_RNDD); \
} \
FloatNum Rounding::name##_up(FloatNum x) { \
return invoke_mpfr(x, mpfr_##name, GMP_RNDU); \
}
GECODE_GENR_FUNC(exp)
GECODE_GENR_FUNC(log)
GECODE_GENR_FUNC(sin)
GECODE_GENR_FUNC(cos)
GECODE_GENR_FUNC(tan)
GECODE_GENR_FUNC(asin)
GECODE_GENR_FUNC(acos)
GECODE_GENR_FUNC(atan)
GECODE_GENR_FUNC(sinh)
GECODE_GENR_FUNC(cosh)
GECODE_GENR_FUNC(tanh)
GECODE_GENR_FUNC(asinh)
GECODE_GENR_FUNC(acosh)
GECODE_GENR_FUNC(atanh)
#undef GECODE_GENR_FUNC
}}
#endif
// STATISTICS: float-var
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